// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/message_center/views/message_bubble_base.h"

#include "base/bind.h"
#include "ui/message_center/message_center_style.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"

namespace {
// Delay laying out the MessageBubbleBase until all notifications have been
// added and icons have had a chance to load.
const int kUpdateDelayMs = 50;
const int kMessageBubbleBaseDefaultMaxHeight = 400;
}

namespace message_center {

const SkColor MessageBubbleBase::kBackgroundColor = SkColorSetRGB(0xfe, 0xfe, 0xfe);

MessageBubbleBase::MessageBubbleBase(MessageCenter* message_center,
    MessageCenterTray* tray)
    : message_center_(message_center)
    , tray_(tray)
    , bubble_view_(NULL)
    , max_height_(kMessageBubbleBaseDefaultMaxHeight)
    , weak_ptr_factory_(this)
{
}

MessageBubbleBase::~MessageBubbleBase()
{
    if (bubble_view_)
        bubble_view_->reset_delegate();
}

void MessageBubbleBase::BubbleViewDestroyed()
{
    bubble_view_ = NULL;
    OnBubbleViewDestroyed();
}

void MessageBubbleBase::ScheduleUpdate()
{
    weak_ptr_factory_.InvalidateWeakPtrs(); // Cancel any pending update.
    base::MessageLoop::current()->PostDelayedTask(
        FROM_HERE,
        base::Bind(&MessageBubbleBase::UpdateBubbleView,
            weak_ptr_factory_.GetWeakPtr()),
        base::TimeDelta::FromMilliseconds(kUpdateDelayMs));
}

bool MessageBubbleBase::IsVisible() const
{
    return bubble_view() && bubble_view()->GetWidget()->IsVisible();
}

void MessageBubbleBase::SetMaxHeight(int height)
{
    // Maximum height makes sense only for the new design.
    if (height == 0)
        height = kMessageBubbleBaseDefaultMaxHeight;
    if (height == max_height_)
        return;

    max_height_ = height;
    if (bubble_view_)
        bubble_view_->SetMaxHeight(max_height_);
}

views::TrayBubbleView::InitParams MessageBubbleBase::GetDefaultInitParams(
    views::TrayBubbleView::AnchorAlignment anchor_alignment)
{
    views::TrayBubbleView::InitParams init_params(
        views::TrayBubbleView::ANCHOR_TYPE_TRAY,
        anchor_alignment,
        kNotificationWidth,
        kNotificationWidth);
    init_params.arrow_color = kBackgroundDarkColor;
    return init_params;
}

} // namespace message_center
